On May 31 and June 1, 1942, mini-submarines, launched from a large Japanese mother-sub, the I-24, attacked Sydney Harbour.The subs caused havoc, sinking the converted ferry HMAS Kuttabul (being used as a navy depot ship) with the loss of 21 lives before they were themselves destroyed. A few days later I-24 attacked and sank the … Continue reading Japanese mini-submarines on tour